The Snowy knight is a butterfly that can be captured at the Rellekka Hunter area by hunters with a Hunterlevel of at least 35. A butterfly net and a butterfly jar are required, which can be bought at hunter stores. Once caught, the Snowy knight can be used on another player to increase the other player's Life points. Snowy knights can be helpful in completing quests such as Desert Treasure because a partner can bring along some Snowy knights to help heal the player while fighting Damis, this way it doesn't take up inventory spaces from the player fighting.

With level 90 Hunter and 85 Agility, a player can catch Snowy knights with their bare hands. This gives the player 500 Hunter and 100 Agilityexperience. Catching butterflies usually requires both hands free but the Enhanced yaktwee stick can be used, when it is sheathed. The player will follow it until it is caught. Following an update on the 13 September2013 catching a butterfly bare-handed gives a chance (4 were obtained in a sample of 5000 butterflies) of obtaining a Crystal triskelion fragment. After the butterfly has been caught the player will release it, meaning that the butterfly cannot be kept. Butterflies respawn very quickly; to minimise the amount of time running around trying to find them, camp a spot that spawns a butterfly with a small wander radius.